Across
- 2. fatlike substance found in meats, dairy products, and egg yolks
- 4. system made up of heart, blood vessels, and your blood
- 5. a muscle acts as a pump to supply blood to your body cells
- 6. number of heartbeats per minute when you are relatively inactive
- 8. means with "oxygen"
- 10. activity that is so intense that your body cannot supply adequate oxygen to sustain
- 11. minutes needed of cardiovascular activity
- 12. activity helps improve your cardiovascular fitness
Down
- 1. system made up of your lungs and the air passages that bring air
- 3. is a more vigorous type of aerobic activity
- 7. activity that is steady enough to allow the heart to supply all oxygen your muscles need
- 9. carries blood filled with waste products from the muscle cells back to the heart
- 10. carries blood away from your heart to another part of the body